OMENWAVE modelled vulnerability-chaining pathways

CVE-2026-21589

This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific files within the web application root directory in affected versions. Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. In some configurations, there may be some sensitive files that make this highly severe. This vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions. The vulnerability must be addressed for affected versions of: -- Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1 -- Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19 -- Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.7, 7.2.4 -- Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12 -- Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12 -- Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12 -- Crucible, fix versions 4.9.15 -- Fisheye, fix version 4.9.15 -- Exploitation requires prior knowledge of the target file's exact name and path. The vulnerability does not include the capability to enumerate or list directory contents.

7.5
CVSS High
99.5%
EPSS p100
YES
In CISA KEV

Data as of 2 Nov 2026 · NVD, CISA KEV, EPSS

Why chaining, at machine speed

Defenders still triage vulnerabilities one CVE at a time, while increasingly automated attackers combine them at machine speed. Omenwave models the plausible pathways by which this CVE could be chained with others — surfacing them for research and awareness, with evidence for each step.

Modelled capability profile
Kill-chain stage
RECON
Requires
NONE access, NETWORK vector
Grants
NONE access
Capabilities
information disclosure
Model confidence
high · CVSS 3.1
Top plausible next hops
CVE-2014-3120RECON → RECONmedium plausibility · KEV

The source discloses information that may contain usable credentials, which could satisfy the destination's authentication requirement (lower confidence).

The default configuration in Elasticsearch before 1.2 enables dynamic scripting, which allows remote attackers to execute arbitrary MVEL expressions…

CVE-2020-11652RECON → RECONmedium plausibility · KEV

The source discloses information that may contain usable credentials, which could satisfy the destination's authentication requirement (lower confidence).

An issue was discovered in SaltStack Salt before 2019.2.4 and 3000 before 3000.2. The salt-master process ClearFuncs class allows access to some meth…

CVE-2018-18809RECON → RECONmedium plausibility · KEV

The source discloses information that may contain usable credentials, which could satisfy the destination's authentication requirement (lower confidence).

The default server implementation of TIBCO Software Inc.'s TIBCO JasperReports Library, TIBCO JasperReports Library Community Edition, TIBCO JasperRe…

CVE-2019-1003030RECON → PRIV_ESClow plausibility · KEV

The source discloses information that may contain usable credentials, which could satisfy the destination's authentication requirement (lower confidence).

A sandbox bypass vulnerability exists in Jenkins Pipeline: Groovy Plugin 2.63 and earlier in pom.xml, src/main/java/org/jenkinsci/plugins/workflow/cp…

CVE-2025-49704RECON → EXECUTIONlow plausibility · KEV

The source discloses information that may contain usable credentials, which could satisfy the destination's authentication requirement (lower confidence).

Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Open in the interactive explorer →
Embed this snapshot

Paste this into a blog post or report — it renders a compact, exploit-free chain snapshot.

Modelled plausible chaining potential derived from public CVE metadata (CVSS, CWE, CPE). Not a confirmed real-world exploit chain and contains no exploitation detail. For research and awareness only.

Methodology · Interactive explorer · JSON: /cve/CVE-2026-21589